Datasheet

TC72
DS21743B-page 14 © 2011 Microchip Technology Inc.
FIGURE 4-3: Serial Interface Timing Diagrams (CP=0).
A
1
SCK
SDI
SDO
High Z
A7=1
CE
Single Byte Write Operation
(CP=0, data shifted on rising edge of SCK, data clocked on falling edge of SCK, A7=1)
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
A A A A A A A D D D D D D D D
7654321076543210
MSb LSb
Single Byte Read Operation
(CP=0, data shifted on rising edge of SCK, data clocked on falling edge of SCK, A7=0)
CE
A
1
SCK
SDI
A7=0
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
A A A A A A A
D D
SDO
High Z
High Z
76543210
MSb LSb
70
SPI Multiple Byte Transfer
CE
SCK
Write Operation
(CP=0, data shifted on rising edge of SCK, data clocked on falling edge of SCK, A7=1)
SDI
Address Byte = 80hex
High Z
SDO
Control Byte
A7 A0 D7 D0
Read Operation
(CP=0, data shifted on rising edge of SCK, data clocked on falling edge of SCK, A7=0)
SDI
SDO
High Z High Z
MSB Temp. Byte
LSB Temp. Byte
Address Byte = 02hex
Control Byte
A7
A0
D7 D0 D7 D0
D7
D0